Polyatomic Ions Reference Sheet
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1
2List of Polyatomic Ions (“Packages”)
NH
+
ammonium
OH
-
hydroxide
4
NO
-
nitrate
3
SO
2-
sulfate
4
SO
2-
sulfite
3
PO
3-
phosphate
4
PO
3-
phosphite
3
-
CH
COO
acetate
3
2-
CO
carbonate
3
HCO
-
bicarbonate
3
CN
-
cyanide
SCN
-
thiocyanide
Cr
O
2-
dichromate
2
7
IO
-
iodate
3
BrO
-
bromate
3
-
ClO
chlorate
3
ClO
-
hypochlorite
MnO
-
permanganate
4
CrO
2-
chromate
4
List of Special Names for Multivalent Metals
Cu
+
copper (I)
cuprous
Cu
2+
copper (II)
cupric
Fe
2+
iron (II)
ferrous
3+
Fe
iron (III)
ferric
Sn
2+
tin (II)
stannous
Sn
4+
tin (IV)
stannic
Pb
2+
lead (II)
plumbous
Pb
4+
lead (IV)
plumbic
Co
2+
cobalt (II)
cobaltous
Co
3+
cobalt (III)
cobaltic
+
Au
gold (I)
aurous
3+
Au
gold (III)
auric
Hg
+
mercury (I)
mercurous
Hg
2+
mercury (II)
mercuric
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